Mercurial > dive4elements > river

annotate backend/src/main/java/org/dive4elements/river/importer/parsers/SedimentDensityParser.java @ 6746:d3c609581313 double-precision

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Sediment Density parser: avoid NPE when no year is given
author Tom Gottfried <tom.gottfried@intevation.de>
date Fri, 02 Aug 2013 11:51:08 +0200
parents bd437771ea00
children 4b26fd60105f
rev   line source
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Sascha L. Teichmann <teichmann@intevation.de>
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1 /* Copyright (C) 2011, 2012, 2013 by Bundesanstalt für Gewässerkunde
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2 * Software engineering by Intevation GmbH
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3 *
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4 * This file is Free Software under the GNU AGPL (>=v3)
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5 * and comes with ABSOLUTELY NO WARRANTY! Check out the
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6 * documentation coming with Dive4Elements River for details.
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7 */
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8
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9 package org.dive4elements.river.importer.parsers;
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10
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11 import org.dive4elements.river.importer.ImportDepth;
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12 import org.dive4elements.river.importer.ImportSedimentDensity;
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13 import org.dive4elements.river.importer.ImportSedimentDensityValue;
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14
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15 import java.io.File;
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16 import java.io.IOException;
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17
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18 import java.math.BigDecimal;
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19
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20 import java.text.NumberFormat;
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21 import java.text.ParseException;
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22
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23 import java.util.ArrayList;
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24 import java.util.List;
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25
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26 import java.util.regex.Matcher;
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27 import java.util.regex.Pattern;
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28
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29 import org.apache.log4j.Logger;
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30
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31 public class SedimentDensityParser extends LineParser {
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32
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33 private static final Logger log =
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34 Logger.getLogger(SedimentDensityParser.class);
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35
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36 public static final NumberFormat nf =
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37 NumberFormat.getInstance(DEFAULT_LOCALE);
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38
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39 public static final Pattern META_DEPTH =
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40 Pattern.compile("^Tiefe: (\\w++)-(\\w++)( (\\w++))?.*");
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41
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42 public static final Pattern META_YEAR =
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43 Pattern.compile("^Jahr: (\\d{4}).*");
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44
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45 protected List<ImportSedimentDensity> sedimentDensities;
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46
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47 protected ImportSedimentDensity current;
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48
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49 protected String currentDescription;
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50
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51 protected String yearString;
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52
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53 public SedimentDensityParser() {
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54 sedimentDensities = new ArrayList<ImportSedimentDensity>();
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55 }
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56
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57
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58 @Override
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59 public void parse(File file) throws IOException {
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60 currentDescription = file.getName();
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61
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62 super.parse(file);
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63 }
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64
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65
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66 @Override
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67 protected void reset() {
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68 current = new ImportSedimentDensity(currentDescription);
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69 }
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70
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71
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72 @Override
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73 protected void finish() {
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74 if (current != null) {
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75 sedimentDensities.add(current);
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76 }
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77 }
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78
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79
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80 @Override
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81 protected void handleLine(int lineNum, String line) {
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82 if (line.startsWith(START_META_CHAR)) {
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83 handleMetaLine(stripMetaLine(line));
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84 }
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85 else {
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86 handleDataLine(line);
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87 }
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88 }
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89
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90
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91 protected void handleMetaLine(String line) {
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92 if (handleMetaDepth(line)) {
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93 return;
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94 }
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95 else if (handleMetaYear(line)) {
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96 return;
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97 }
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98 else {
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99 log.warn("Unknown meta line: '" + line + "'");
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100 }
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101 }
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102
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103
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104 protected boolean handleMetaDepth(String line) {
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105 Matcher m = META_DEPTH.matcher(line);
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106
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107 if (m.matches()) {
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108 String lo = m.group(1);
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109 String up = m.group(2);
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110
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111 log.info("Found sediment density depth: " + lo + " - " + up + " cm");
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112
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113 try {
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114 ImportDepth depth = new ImportDepth(
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115 new BigDecimal(nf.parse(lo).doubleValue()),
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116 new BigDecimal(nf.parse(up).doubleValue())
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117 );
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118
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119 current.setDepth(depth);
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120
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121 return true;
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122 }
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123 catch (ParseException pe) {
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124 log.warn("Unparseable numbers in: '" + line + "'");
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125 }
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126 }
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127 else {
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128 log.debug("Meta line doesn't contain depth information: " + line);
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129 }
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130
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131 return false;
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132 }
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133
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134 protected boolean handleMetaYear(String line) {
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135 Matcher m = META_YEAR.matcher(line);
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136
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137 if (m.matches()) {
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138 yearString = m.group(1);
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139
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140 log.info("Found sediment density year: " + yearString);
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141
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142 return true;
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143 }
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144 else {
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145 log.debug("Meta line doesn't contain year: " + line);
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146 }
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147
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148 return false;
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149 }
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150
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151
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152 protected void handleDataLine(String line) {
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153 String[] vals = line.split(SEPERATOR_CHAR);
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154
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155 if (vals == null || vals.length < 3) {
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156 log.warn("skip invalid data line: '" + line + "'");
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157 return;
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158 }
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159
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160 BigDecimal km = null;
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161 BigDecimal shoreOffset = null;
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162 BigDecimal density = null;
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163 try {
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164 km = new BigDecimal(nf.parse(vals[0]).doubleValue());
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165 density = new BigDecimal(nf.parse(vals[2]).doubleValue());
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166 if (!vals[1].isEmpty()) {
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167 shoreOffset = new BigDecimal(nf.parse(vals[1]).doubleValue());
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168 }
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169 }
70b4a31a3306 Implemented the method stubs of the parser for sediment density and made some db schema adaptions.
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diff changeset
170 catch (ParseException pe) {
5490
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diff changeset
171 log.warn("Unparseable numbers in '" + line + "'");
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172 }
4524
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Raimund Renkert <rrenkert@intevation.de>
parents: 4193
diff changeset
173
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diff changeset
174 if (km == null || density == null) {
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diff changeset
175 log.warn("SDP: No km nor density given. Skip line");
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176 return;
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diff changeset
177 }
5507
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178
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diff changeset
179 BigDecimal year = null;
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d3c609581313 Sediment Density parser: avoid NPE when no year is given
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diff changeset
180 if (yearString != null) {
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diff changeset
181 try {
d3c609581313 Sediment Density parser: avoid NPE when no year is given
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diff changeset
182 year = new BigDecimal(nf.parse(yearString).doubleValue());
d3c609581313 Sediment Density parser: avoid NPE when no year is given
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diff changeset
183 }
d3c609581313 Sediment Density parser: avoid NPE when no year is given
Tom Gottfried <tom.gottfried@intevation.de>
parents: 6745
diff changeset
184 catch (ParseException pe) {
d3c609581313 Sediment Density parser: avoid NPE when no year is given
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diff changeset
185 log.warn("Unparseable year string");
d3c609581313 Sediment Density parser: avoid NPE when no year is given
Tom Gottfried <tom.gottfried@intevation.de>
parents: 6745
diff changeset
186 }
d3c609581313 Sediment Density parser: avoid NPE when no year is given
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diff changeset
187 }
4524
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Raimund Renkert <rrenkert@intevation.de>
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diff changeset
188
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diff changeset
189 current.addValue(new ImportSedimentDensityValue(
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diff changeset
190 km,
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diff changeset
191 shoreOffset,
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Raimund Renkert <rrenkert@intevation.de>
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diff changeset
192 density,
be9e28cff0c4 Parse and store year in sediment densities.
Raimund Renkert <rrenkert@intevation.de>
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diff changeset
193 year,
5565
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Sascha L. Teichmann <teichmann@intevation.de>
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diff changeset
194 currentDescription));
2815
3febaed762b8 Added new parser (stub) to read MINFO sediment density files; prepared import process to handle those files.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
195 }
3febaed762b8 Added new parser (stub) to read MINFO sediment density files; prepared import process to handle those files.
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parents:
diff changeset
196
3febaed762b8 Added new parser (stub) to read MINFO sediment density files; prepared import process to handle those files.
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parents:
diff changeset
197
3febaed762b8 Added new parser (stub) to read MINFO sediment density files; prepared import process to handle those files.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
198 public List<ImportSedimentDensity> getSedimentDensities() {
3febaed762b8 Added new parser (stub) to read MINFO sediment density files; prepared import process to handle those files.
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parents:
diff changeset
199 return sedimentDensities;
3febaed762b8 Added new parser (stub) to read MINFO sediment density files; prepared import process to handle those files.
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parents:
diff changeset
200 }
3febaed762b8 Added new parser (stub) to read MINFO sediment density files; prepared import process to handle those files.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
201 }
3febaed762b8 Added new parser (stub) to read MINFO sediment density files; prepared import process to handle those files.
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parents:
diff changeset
202 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org